The use of multiple mixed pollen is sometimes helpful when a desired pod parent is not cooperative to a certain pollen you would like to use. We'll call that one pollen 'A'. When using a mix of 4, 5, or 6 different pollens, often times there will be one in there which it will be receptive to. That pollen opens the door and creates the path for others to follow, including your desired pollen 'A'. That pollen is referred to as a 'mentor' pollen.
